| bgcolor="#ffcc99" align="center" width="9%" | '''Indian'''<ref>Only for Indian schedules taken along with Federal population schedules. </ref>

+

| width="9%" bgcolor="#ffcc99" align="center" | '''Indian'''<ref>Only for Indian schedules taken along with Federal population schedules. </ref>

|-

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| align="left" | '''1940''' Apr 1

| align="left" | '''1940''' Apr 1

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| bgcolor="#ffffcc" align="center" | -

| bgcolor="#ffffcc" align="center" | -

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| align="left" | '''1850''' Jun 1

+

| align="left" | '''1857'''

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| align="center" | Exist as part of '''Minnesota Terr.'''<ref>In 1850 the only white residents in what is now North Dakota lived in what was then Pembina County, Minnesota Territory.</ref>

+

| align="center" | Exist as part of '''Minnesota Terr.'''<ref>In 1857 the white residents in what is now Pembina, North Dakota lived in what was then Pembina County, Minnesota Territory. See Thorndale and Dollarhide, pages 172, and 259.</ref>

| align="center" | -

| align="center" | -

| align="center" | -

| align="center" | -

−

| align="center" | Exist

+

| align="center" | &nbsp;?

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| align="center" | Exist

+

| align="center" | &nbsp;?

−

| align="center" | Exist

+

| align="center" | &nbsp;?

| align="center" | -

| align="center" | -

| align="center" | -

| align="center" | -

|-

|-

−

| bgcolor="#ffffcc" align="left" | '''1840''' Jun 1

+

| bgcolor="#ffffcc" align="left" | '''1850''' Jun 1

−

| bgcolor="#ffffcc" align="center" | Exist as part of '''Iowa&nbsp;Terr.'''<ref>In 1840 the white residents in what is now Pembina, North Dakota lived in what was then Clayton County, Iowa Territory.</ref>

+

| bgcolor="#ffffcc" align="center" | Exist as part of '''Minnesota Terr.'''<ref>In 1850 the only white residents in what is now North Dakota lived in what was then Pembina County, Minnesota Territory. See Thorndale and Dollarhide, pages 171, and 259.</ref>

−

| bgcolor="#ffffcc" align="center" | -

+

−

| bgcolor="#ffffcc" align="center" | -

+

−

| bgcolor="#ffffcc" align="center" | -

+

| bgcolor="#ffffcc" align="center" | -

| bgcolor="#ffffcc" align="center" | -

| bgcolor="#ffffcc" align="center" | -

| bgcolor="#ffffcc" align="center" | -

+

| bgcolor="#ffffcc" align="center" | Exist

+

| bgcolor="#ffffcc" align="center" | Exist

+

| bgcolor="#ffffcc" align="center" | Exist

| bgcolor="#ffffcc" align="center" | -

| bgcolor="#ffffcc" align="center" | -

| bgcolor="#ffffcc" align="center" | -

| bgcolor="#ffffcc" align="center" | -

|-

|-

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| align="left" | '''1836'''

+

| align="left" | '''1840''' Jun 1

−

| align="center" | Not taken<ref>In 1836 the white residents in what is now Pembina, North Dakota lived in what was then, Wisconsin Territory, but were ignored on the 1836 Wisconsin territorial census. See David W. Taft, "The [First Wisconsin] Territorial Census of 1836 [Internet site]" at http://files.usgwarchives.net/wi/crawford/census/1836census.txt (accessed 19 February 2009), and Reuben Gold Thwaites, "The Territorial Census for 1836" in ''Collections of the State Historical Society of Wisconsin'' 13: 248-49 (Madison, Wis.: Democrate Printing, 1895)[[{{Thwaites}}]].</ref>

+

| align="center" | Exist as part of '''Iowa&nbsp;Terr.'''<ref>Theoretically, in 1840 the white residents in what is now Pembina, North Dakota lived in what was then Clayton County, Iowa Territory. See Thorndale and Dollarhide, pages 114, 170, and 259. The population schedules of Clayton County do not seem to list residents of remote Pembina, 400 miles from the county seat.</ref>

| align="center" | -

| align="center" | -

| align="center" | -

| align="center" | -

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| align="center" | -

| align="center" | -

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|-

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| bgcolor="#ffffcc" align="left" | '''1836'''

+

| bgcolor="#ffffcc" align="center" | Not taken<ref>In 1836 the white residents in what is now Pembina, North Dakota lived in what was then, Wisconsin Territory, but were ignored on the 1836 Wisconsin territorial census. See David W. Taft, "The [First Wisconsin] Territorial Census of 1836 [Internet site]" at http://files.usgwarchives.net/wi/crawford/census/1836census.txt (accessed 19 February 2009), and Reuben Gold Thwaites, "The Territorial Census for 1836" in ''Collections of the State Historical Society of Wisconsin'' 13: 248-49 (Madison, Wis.: Democrate Printing, 1895)[[{{Thwaites}}]].</ref>

↑ Only for Indian schedules taken along with Federal population schedules.

↑ In 1860 people living in what is now North Dakota were enumerated in the "unorganized" part of the Dakota Territory census population schedules along with people in what is now South Dakota. Those schedules included Fort Clark, Fort Union, Fort William, and Pembina, all in what is now North Dakota. In 1860 land west of the Missouri River technically was part of Nebraska Terrritory, but no locales on the Nebraska Territory census can be identified definitely as being in present-day North Dakota.

↑ In 1857 the white residents in what is now Pembina, North Dakota lived in what was then Pembina County, Minnesota Territory. See Thorndale and Dollarhide, pages 172, and 259.

↑ In 1850 the only white residents in what is now North Dakota lived in what was then Pembina County, Minnesota Territory. See Thorndale and Dollarhide, pages 171, and 259.

↑ Theoretically, in 1840 the white residents in what is now Pembina, North Dakota lived in what was then Clayton County, Iowa Territory. See Thorndale and Dollarhide, pages 114, 170, and 259. The population schedules of Clayton County do not seem to list residents of remote Pembina, 400 miles from the county seat.

↑ In 1836 the white residents in what is now Pembina, North Dakota lived in what was then, Wisconsin Territory, but were ignored on the 1836 Wisconsin territorial census. See David W. Taft, "The [First Wisconsin] Territorial Census of 1836 [Internet site]" at http://files.usgwarchives.net/wi/crawford/census/1836census.txt (accessed 19 February 2009), and Reuben Gold Thwaites, "The Territorial Census for 1836" in Collections of the State Historical Society of Wisconsin 13: 248-49 (Madison, Wis.: Democrate Printing, 1895)[FHL Film 1293922 item 2].